Microstructures and mechanical properties of Fe3Al-based Fe-Al-C alloys

被引：46
|
作者：
Schneider, A [1 ]
Falat, L [1 ]
Sauthoff, G [1 ]
Frommeyer, G [1 ]
机构：
[1] Max Planck Inst Eisenforsch GmbH, D-40237 Dusseldorf, Germany
来源：
INTERMETALLICS | 2005年 / 13卷 / 12期
关键词：
iron aluminides (based on Fe3Al); precipitates; mechanical properties at ambient temperature; mechanical properties at high temperatures;
D O I：
10.1016/j.intermet.2005.01.013
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper results on the microstructures and mechanical properties of Fe3Al-based Fe-Al-C alloys with strengthening precipitates of the perovskite-type kappa-phase Fe3AlCx are presented. The alloys are prepared by vacuum induction melting and cast into Cu-moulds. The composition of the Fe3Al matrix of the investigated Fe-Al-C alloys varies between 23 and 29 at.% Al. The ternary C-additions range from I to 3 at.%. The microstructures of the alloys are characterised by means of light optical microscopy (LOM). Phase identification is performed by means of X-ray diffraction (XRD). The strength of the alloys as a function of temperature is determined through compression tests. The room-temperature ductility is evaluated by tensile tests. The fracture surfaces of the tensile specimens are analysed using scanning electron microscopy (SEM). (c) 2005 Elsevier Ltd. All rights reserved.
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页码：1322 / 1331
页数：10
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